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PEAKE & LUSBY.

Coffee. Roaster.

Patented Jun 29, 1869.

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JAMES B. PEAKE AND JAMES A. LUSBY, OF WASHINGTON, DIS- TRICT OFCOLUMBIA.

Letters Patent N 92,090, dated June 29,1869; a-ntedated June 19. 1869.

COFFEE-ROASTER.

' scription of the same, sntiicientto enable others skilled in the artto which our invr. ntion appertains, to fully understand and make thesame, reference being bad to the accompanying drawings, which make partof this specification, and in which- Figure 1, sheet 1, is alongitudinal vertical section 0t our improved roasting-machine; Figure2, sheet 2, is avertical cross-section; and

Figure 3, an cud view of the same.

Like letters of reference indicate like parts in the several figures.

The nature of our invention consists First, in a double damper at thebottom of the roaster, arranged in such a manner as to either entirelyshut off the tire and heat, or graduate its passage through the dampers,or leave the opening which the dampers cover entirely free.

Second, in the arrangement within the roasting and revolving cylinder,of three separate rows of wires, for the purpose of stirring and shakingthe coffee-beans while roastin Third, in the combination, with therevolving cylinder,of an oiler, by means of which the coiicc can begreased.

Fourth, in the application of a device for trying the cofiee whileroasting, without stopping the motion of the revolving cylinder, orotherwise interfering with the operation of roastin A, in the drawings,may represent the outer casing, of any suitable material, provided witha semicircular lid, B.

This casing is open at the bottom, and is provided with a flange, a,ending at the'under side in a rim, 1), which may be of the shape ofcommon boiler-plate holes, so as to set into one of those holes on thetop of the stove. Y

Between the end pieces 0, of the casing A, and the flange a, there is anopen space, sufiicicntly large to allow two sliding dampers, U l), tomove easily forward and back.

These dampers, G D, consist of plates of any suitable materials,provided at regular intervals with square slots, c u, the slots in bothdampers being of equal size, so that when in position, as shown in fig.1, the bottom of casing A is entirely closed.

E E, F F, are halves of circular bearings, attached respectively to theinside of the lid B and casing A, similar halves being attached to theoutside, at one end.

Thesehalves form the hearings i'orthe shaits which support the revolvingcylinder G, in which the coit'ee is roasted.

This cylinder is provided, at its ends, on the outside, with bearings,e, and at one end, on the inside, with the round socketf, having asquare interior surface, into which fits the square end of the shaft H,which carries, at its outer end, the crank-hamlle I.

The other end of the cylinder G is supported by the tube J, having acollar, j, formed on it, and the outer end of which is formed into adownward lip.

The collar j isprovided with a downwardly-projecting rod, i, which maybe bent so as to form a handle, and which passes through a small plate,1!, suitably attached to the casing A, and may be locked by a key, orany other suitable device.

g is a small bearing, attached to the month of tube, J, for the rod K,which moves the small piston l, in the tube, which, at a short distancefrom its inner end, is provided with one or more square slots, m.

The cylinder G hasa lid, hinged atn, and when closed, secured bybuttons, 0.

About the centre of the lid G, and passing through it, is a smalloil-cup, p, which may be tilled with sweet-oil, o any other fattysubstance.

Secured in the ends of cylinder G, and running longitndinally from endto end, are wires, 1, arranged in three rows, as shown in fig. .5.

K is a handle, suitably attached to the casing A.

The operation of our device is as follows:

The casing Ais placed over a boiler-plate hole,and the cylinder (1placed in its bearings, as shown inti". 1, the tube J being held firmlyby means of rod 5.

The cylinder is then filled with coffee, and its lid, G, closed andsecured by buttons, 0.

The lid 1%,ot' the casing, is then also closed, and the cylinderrevolved by means of crank-handl I.

As the cylinder revolves, the cotfee-beans are constantly stirred andshaken by the wires 0', against which they fall, the wires being placedso as to allow the beans to fall between the two innelurows of them, andbe thrown by them around, the outer row being too near the casing toallow any beans to pass between it and the wires. And by means of thisshaking, an equal burning of the coffee is attained, as each oi' thebeans comes thereby in equal contact with the heat. Many persons preferto impregnate the coti'ee, while roasting, with tatty or aromaticsubstance, as sweet-oil, butter, lard, &c.

- For this purpose the cup 1) is tilled with any de- I sired fatty oraromatic substance, which is, as the cyliudcr revolves, distributed fromthe same among the beans.

As the cylinder G revolves around the tube J, some of'the beans willfall into the latter through slot or slots 'm, and by drawing out therod K, these beans are drawn towards the month of the tube, and thus atany time can the condition ofthc coti'ec be ascertained, and not onlyfrom one part of the cylinder, but from all parts, for the wires 1' areso arranged that the beans strike them at angles, so as to be scatteredall over the cylinder, and thus beans from every part of the cylinderwill fall into tube J. e

If the tire is not too hot, and at the beginning of burning coffee, bothdampers, G D, may be either entirely withdrawn, or drawn out so far asto be. still held by the flange a.

As the operation is progressing, and it is desired to exercise morecare, so as to obtain the proper amount of roasting, one or the other ofthe dampers may be pushed in, or both of them, in which latter case theslots 0' ll ought to cover each other. and thus less heat'will reach thecylinders; and this influx of heat nay be still more regulated byfurther moving either one or the other damper, and thus more or lessclosing the slots 0 41, until the heat may be entirely shut off, bycoveriugone damper by the other, as shown in fig. 1.

The roasted cofl'ee may be removed from cylinder G, and the latterfilled with another lot of beans to be roasted, and replaced withouttaking the casing A from the stove.

The three rows of wires perform peculiar functions, which cannot beperformed by either flanges, or by a single row of wires alone, both ofwhich lat-tel; we are well aware are old, and which we desire todistinctly disclaim. Our two inner rows olwircs are set in such a manneras to allow the beans to pass between them,

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by means of which motion they are scattered and turned so as to besubmitted to heat on all sides equally, and to be well mixed, while theouter row is so arranged, in relation to the inner ones, that the beanspassing between the latter cannot touch the cylinder, but must strikethe outer row, and are thus thrown back into the cylinder.

Having thus described our invention,

What we claim as new, and desire to secure by Letters Patent, is-

l. A coli'ee roaster, constructed with a flange, a, and a double damper,C D, substantially as and for the purpose described.

2. The arrangement, in a coffee-roaster having a revolving cylinder, ofI three or more rows of wires, set

parallel to its periphery, substantially asand for the purpose setforth.

3. The combination, with a revolving coti'ee-roasting cylinder, of anoil-cu p, substantially as and for the purposes described.

4. In a coffee-roaster, the trying-device, consisting of slotted tube J,rod K, and piston I, substantially as and for the purposes set forth.

JAMES B. PEAKE, JAMES A. LUSBY.

\Vitnesses:

ALEXR. A. G. KLAUCKE, SAMUEL Burial.

